Me likes! But the steam is going a little bit to fast. But that's just my opinion. Also, the steam looks a bit like smoke because of the grey. Otherwise, great job!
maybe a lighter shade of grey, with perhaps a black outline? i don't know if that would ruin it or not, because if you make the steam lighter, it won't be as noticeable.
I love the perspective. It's such a common thing to see standard profile with the handle perched on the edge, so the unique 3/4 profile you've done here really stands out. Gives the mug more of a 3D look, too.